New York ID/DD agencies pay for many over-the-counter medications out of their daily rate. Those items are not supposed to be billed to Medicaid. When a pharmacy bills them to Medicaid by mistake, the agency is exposed on two sides. The Office of the Medicaid Inspector General can look back six years and claw the money back under 18 NYCRR 504.3, and the cost never made it onto the agency's Consolidated Fiscal Report, which OPWDD uses to set future rates. Getting the routing right the first time is the only durable fix.

Key Takeaways

• OMIG audits are bound by a six-year lookback under 18 NYCRR Sections 504.3 and 517.3. A 2026 audit can still reach 2020 billing.
• Items covered by the daily rate cannot also be billed to Medicaid, even when Medicaid technically covers them as a service category.
• A misrouted OTC line costs the agency twice. Audit clawback today, suppressed future rates tomorrow.
• CFR submissions are due to OPWDD on June 1 for calendar-year filers, and there is no retroactive fix once the window closes.

What does the daily rate actually cover?

The daily rate pays for predictable, recurring costs of running a residence, and many over-the-counter items sit inside that bucket. In an OPWDD-certified residence, that bucket absorbs food, electricity, hygiene supplies, and common OTC items. The rate exists so nobody is calling a pharmacy at 9 p.m. about a prior auth on acetaminophen.

The trap is that some of those same OTC items are also technically reimbursable through Medicaid. That overlap is where the billing decision happens. The pharmacy either routes the cost to the agency under the daily rate, or it routes the cost to Medicaid. One is right. The other shows up later as a bill the agency does not expect.

How far back can the audit reach?

OMIG can look back six years under 18 NYCRR 504.3, which means a 2026 audit can still pull billing decisions from 2020. The Office of the Medicaid Inspector General audits Medicaid providers in New York under that six-year lookback window, codified at Sections 504.3 and 517.3 of Title 18. It is a hard regulatory ceiling, with a carve-out for cases that involve potential fraud.

Six years is enough rope to catch billing decisions made by a pharmacy the agency no longer works with. An agency switches pharmacies, the new pharmacy is doing everything right, and an audit letter still lands two years later because the prior pharmacy was billing OTCs to Medicaid that the daily rate already covered. The agency inherited the exposure with the resident roster.

Why does it compound on the CFR side?

Misbilled OTC costs never land on the agency's Consolidated Fiscal Report, so OPWDD never sees the expense in the year it happened. OPWDD-funded agencies file an annual CFR that tells the state what the agency actually spent, and it feeds the rate-setting process for the years that follow. Calendar-year filers submit by June 1.

When OTC items get billed to Medicaid by mistake, the agency does not pay for them out of pocket, so the cost never lands on the CFR. The agency pays once when the audit clawback letter arrives. The agency pays again, indirectly, every year going forward where the rate was never built up by the cost they should have captured.

Four Questions to Pressure-Test Your Pharmacy

• Pull a recent OTC line. Pick one resident, one month, one statement. Trace the OTC item to the payer.
• Ask the routing question. Why was this billed where it was billed? A real answer cites the daily rate, the program type, and the waiver.
• Cross-check the CFR. Did the cost land on the cost report? If it was billed to Medicaid, it did not.
• Document the gap. Whatever you find, write it down. Contemporaneous documentation is what protects the agency at audit time.

Frequently Asked Questions

How far back can OMIG audit our agency?

Six years from the date the service was furnished, under 18 NYCRR 504.3. A longer window applies if fraud is suspected. An audit in 2026 can reach claims from 2020.

What if the wrong billing was done by our previous pharmacy?

The agency holds the liability. The audit letter goes to the provider of record, which is the agency, not the pharmacy that processed the original claim. Switching pharmacies does not reset the lookback.

Why is this a CFR issue and not just a Medicaid issue?

Because the CFR is what OPWDD uses to set future rates. If a real cost never appears on the CFR, the state has no record of it, and the rate methodology never accounts for it.

Is there a way to retroactively fix a misbilled year?

Not in any practical sense. Once the CFR window closes for that year, the cost is not coming back onto it. The forward fix is to get current billing right and keep it right.

Sources

• New York State Office of the Medicaid Inspector General. Audit Protocols Frequently Asked Questions. omig.ny.gov.
• 18 NYCRR § 504.3, Duties of the Provider.
• 18 NYCRR § 517.3, Audit procedures and recovery.
• New York State Office for People With Developmental Disabilities. Consolidated Fiscal Reporting. opwdd.ny.gov.